56578291 has 24 divisors (see below), whose sum is σ = 73765296. Its totient is φ = 42880320.

The previous prime is 56578289. The next prime is 56578297. The reversal of 56578291 is 19287565.

It is not a de Polignac number, because 56578291 - 2¹ = 56578289 is a prime.

It is a super-3 number, since 3×56578291³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (56578297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18525 + ... + 21361.

It is an arithmetic number, because the mean of its divisors is an integer number (3073554).

Almost surely, 2^56578291 is an apocalyptic number.

56578291 is a deficient number, since it is larger than the sum of its proper divisors (17187005).

56578291 is a wasteful number, since it uses less digits than its factorization.

56578291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899 (or 2892 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 56578291 is about 7521.8542261865. The cubic root of 56578291 is about 383.8986707283.

The spelling of 56578291 in words is "fifty-six million, five hundred seventy-eight thousand, two hundred ninety-one".